[#387246] newbie question — sunny parker <info@2020proj.com>

i am coming from php and dont seem to quite understand how ruby works

13 messages 2011/09/01

[#387330] installing naive bayes classifier — aya abdelsalam <ayoya_91@...>

Hello

10 messages 2011/09/02

[#387344] Beginner needing help - Writing right-angle triangle program — Kane Williams <theburrick@...>

I've been going through a Haskell tutorial (Just to see what it's like)

12 messages 2011/09/03

[#387356] Which version should I download? — Vladimir Van Bauenhoffer <cluny_gisslaren@...>

Im new to programming and Im thinking of downloading and starting with

17 messages 2011/09/03

[#387392] loops problem — jack jones <shehio_22@...>

for (j = @array.length ; j > counter ; j = j-1) # counter is a variable

13 messages 2011/09/04

[#387469] posts on Unix systems programming — Eric Wong <normalperson@...>

I would like to do a series of mailing list posts on the subject of Unix

28 messages 2011/09/06

[#387530] Unexpected behavior of Ruby array — Suvankar Satpati <suvankar.17@...>

I was going through the exercises at http://rubykoans.com/ and got

11 messages 2011/09/08

[#387544] Executing the output of a look — dwight schrute <spambocks@...>

Hi,

14 messages 2011/09/08

[#387586] Creating a hash from two arrays — simon harrison <simonharrison.uk@...>

Hi. Can anyone help with this? I'd like to end with a hash like so:

15 messages 2011/09/09

[#387596] newbie ruby installation malloc issue — "mark e." <mark_f_edwards@...>

hi all -

12 messages 2011/09/09

[#387614] how to write data in binary to a file? — frank hi <yw_hi@163.com>

Hi,

11 messages 2011/09/10

[#387646] How do I make output generate a float without an excess numbers of decimal places? — Kane Williams <theburrick@...>

For example, my current code is

11 messages 2011/09/11

[#387725] Any downsides to writing paranthesises? — Vladimir Van Bauenhoffer <cluny_gisslaren@...>

Im a newbie programmer who is trying to learn Ruby after having just

18 messages 2011/09/12

[#387811] Get interpreter path — Michal Suchanek <hramrach@...>

Hello,

26 messages 2011/09/14
[#387842] Re: Get interpreter path — Phillip Gawlowski <cmdjackryan@...> 2011/09/14

On Wed, Sep 14, 2011 at 3:35 PM, Michal Suchanek <hramrach@centrum.cz> wrot=

[#387844] Re: Get interpreter path — Michal Suchanek <hramrach@...> 2011/09/14

On 14 September 2011 20:47, Phillip Gawlowski <cmdjackryan@gmail.com> wrote:

[#387814] Tough Ruby Homework — Rory Pascua <rorypascua@...>

I'm trying to take a long piece of text, find a word, and get that word

18 messages 2011/09/14

[#387853] Can I Safely Use Rubinius While Learning? — Aaron Jackson <jacksonaaronc@...>

Greetings,

18 messages 2011/09/15

[#387915] Some newbie questions — Vladimir Van Bauenhoffer <cluny_gisslaren@...>

I got some newbie questions which I would very much appreciate if

14 messages 2011/09/15

[#388003] Ruby Speed Question — Kevin Anon <oblivious.sage@...>

Wrote my first Ruby program recently for a class assignment where we had

12 messages 2011/09/18

[#388078] appending \n to each element in an array — Joe Collins <joec_49@...>

I have an array

13 messages 2011/09/20

[#388123] Turning on a special program at special time and turning off the computer at another special time — "amir e." <aef1370@...>

I decided to write a program in RUBY wherein these items have been done

11 messages 2011/09/21
[#388124] Re: Turning on a special program at special time and turning off the computer at another special time — andrew mcelroy <sophrinix@...> 2011/09/21

That sounds like a program a special program a terrorist would write. Are

[#388198] Conditional statements with multiple arguments — "Thomas B." <sinixlol@...>

Good afternoon everyone,

18 messages 2011/09/24

[#388203] Ruby 1.9.3 RC1 is out — "Yuki Sonoda (Yugui)" <yugui@...>

-----BEGIN PGP SIGNED MESSAGE-----

19 messages 2011/09/24
[#388208] Re: [ANN] Ruby 1.9.3 RC1 is out — Quintus <sutniuq@...> 2011/09/24

-----BEGIN PGP SIGNED MESSAGE-----

[#388209] Re: [ANN] Ruby 1.9.3 RC1 is out — Chris White <cwprogram@...> 2011/09/24

[#388214] Re: [ANN] Ruby 1.9.3 RC1 is out — Quintus <sutniuq@...> 2011/09/24

-----BEGIN PGP SIGNED MESSAGE-----

[#388216] Re: [ANN] Ruby 1.9.3 RC1 is out — Yusuke Endoh <mame@...> 2011/09/24

Hello,

[#388248] Looking for better/familiar approach to command line opts — "Perl J." <perljunkie@...>

So I guess the warning to the reader upfront is... I'm a bit of a Perl

14 messages 2011/09/25

[#388333] Get all classes from a list of files — Jeroen van Ingen <jeroeningen@...>

I have a list of ruby files. I would like to create objects from all

11 messages 2011/09/28

[#388342] Ruby Syntax @keywords ||= [ ] — Bhavesh Sharma <sharmabhavesh@...>

Sorry if this comes across as a dumb question, but what does the

11 messages 2011/09/28

[#388366] IO.readlines will not accept variable with file name Why? — Joda jenson <jodajen2@...>

I am fairly new to Ruby and I am stuck on this. Would someone have a

13 messages 2011/09/29
[#388368] Re: IO.readlines will not accept variable with file name Why? — Robert Klemme <shortcutter@...> 2011/09/29

On Thu, Sep 29, 2011 at 11:14 AM, Joda jenson <jodajen2@yahoo.com> wrote:

Re: opening a file with variable name

From: Robert Klemme <shortcutter@...>
Date: 2011-09-04 12:08:56 UTC
List: ruby-talk #387390
On Sun, Sep 4, 2011 at 2:35 AM, Jeffrey Smith <jesmith2095@gmail.com> wrote=
:
>
> On Sep 3, 2011, at 7:39 PM, Hassan Schroeder wrote:
>
>> On Sat, Sep 3, 2011 at 4:26 PM, Jeffrey Smith <jesmith2095@gmail.com> wr=
ote:
>>> I changed the slashed and escaped the file path ( I noticed after the f=
act that my path has spaces), and no change in the error at all.
>>
>>>> Again, what OS? <<
>>
>> Have you tried 1) opening a file that's in the same directory you've
>> started IRB in? 2) changing directories to the one with the target file
>> and starting IRB there?
>>
>> --
>> Hassan Schroeder ------------------------ hassan.schroeder@gmail.com
>> http://about.me/hassanschroeder
>> twitter: @hassan
>>
>
> The OS is Windows 2003.
>
> I can open the file from the cmd line (not IRB), and when I hardcode the =
path in File.open(\\\\sdcfaxgw04\\c$\\epic\\jobs\\Processed\\7.7.7\\Epic Pr=
int Service\\xxx) it works fine.

This cannot work.  You need at least quotes to make that valid Ruby
code.  Please show the *exact* code you are using.

> I created the variable by combining two other variables, and when I try t=
he File.exists? it fails. If I assign the complete path including file (i.e=
. \\\\sdcfaxgw04\\c$\\epic\\jobs\\Processed\\7.7.7\\Epic Print Service\\sd3=
n4v1.20110902.1924.55435838.JMym.epic) it works fine.
>
> Could it be the way I'm creating the variable? This is the process:
>
> ertf =3D "\\\\sdcfaxgw04\\c$\\epic\\jobs\\Processed\\7.7.7\\Epic Print Se=
rvice\\"+filevariable

What is in filevariable?  Do you happen to read "filevariable" from
stdin?  Then this is what happens:

irb(main):001:0> File.open("price.sql").close
=3D> nil

OK, file is there.  Now the test:

irb(main):002:0> filevariable =3D gets
price.sql
=3D> "price.sql\n"
irb(main):003:0> File.open(filevariable).close
Errno::ENOENT: No such file or directory - price.sql

	from (irb):3:in `initialize'
	from (irb):3:in `open'
	from (irb):3
	from /usr/local/bin/irb19:12:in `<main>'

Note the trailing newline.  You can get rid of it by doing

irb(main):004:0> filevariable.chomp!
=3D> "price.sql"
irb(main):005:0> filevariable
=3D> "price.sql"


Kind regards

robert

--=20
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/

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